He said: "I've always said that I would like to be president. It's kind of my whole thing. I'm starting the campaign now."

Nick also spoke about his struggle with diabetes - a medical condition where the body does not produce enough or respond properly to insulin, and which can result in renal failure and blindness - saying he was keen to raise awareness of the condition.

He explained to CNN show "The Situation Room": "I'm here to basically raise awareness and encourage people to continue to do what they can to raise awareness as well in their own circle and on a broader scale."

"Obviously, we've made some advances in technology to better manage our diabetes, but we're hoping for a cure one day, and that's what the main goal is."